SOLUTION: The first angle of a triangle is 30 degrees less than the second angle.The third angle of a triangle is four times the second angle. Use x to represent the unknown value. Write an
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Question 987966: The first angle of a triangle is 30 degrees less than the second angle.The third angle of a triangle is four times the second angle. Use x to represent the unknown value. Write an algebraic expression for each of the quantities being compared.
First angle=?
Second angle=?
Third angle=?
Answer by ikleyn(52786) (Show Source): You can put this solution on YOUR website!
.
Hello,
I slightly corrected your formulation.
--------------------------------------------
First angle = x-30
Second angle = x
Third angle = 4x
An equation is
(x-30) + x + 4x = 180.
Solve it:
x - 30 + x + 4x = 180,
6x = 180 + 30,
6x = 210,
x = = 35°.
Answer. 35°.
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